JP2003335940A - Resin composition for sliding member and sliding member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a resin composition which exhibits excellent frictional abrasion characteristics, when a soft metal such as an aluminum alloy is used as a counter material, and is used for sliding members, and to provide a sliding member. <P>SOLUTION: This resin composition for sliding members comprises 0.5 to 30 wt.% of polyethylene resin, 1 to 15 wt.% of a hydrocarbon-based wax, 0.1 to 5 wt.% of an inorganic whisker having a Moh's hardness of 2 to 4, and the remainder of a polyamide resin. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin composition for sliding members, and more particularly, to a sliding member that exhibits particularly excellent friction and wear characteristics when a soft metal such as an aluminum alloy is used as a sliding mating member. The present invention relates to a resin composition for a moving member and a sliding member.

[0002]

2. Description of the Related Art Conventionally, thermoplastic synthetic resins such as polyamide resins and polyacetal resins have been widely used as mechanical elements such as bearings and gears because of their excellent mechanical strength and wear resistance. However, since these synthetic resins cannot obtain sufficient friction and wear properties by themselves, a solid lubricant such as graphite, molybdenum disulfide, ethylene tetrafluoride resin, or a lubricant such as mineral oil or wax is added to these resins. It is included or blended with another synthetic resin having low friction such as polyethylene resin to improve the friction and wear characteristics.

For example, as a resin composition containing a polyethylene resin, a polyamide resin, a polyacetal resin,
There is known a thermoplastic resin composition obtained by melt-kneading 70 to 98% by weight of a thermoplastic resin selected from polyester resins and polycarbonate resins and 2 to 30% by weight of ultrahigh molecular weight polyethylene resin powder (Japanese Patent Publication No. 63-63). -65
No. 232).

On the other hand, not only sliding members made of synthetic resin but also sliding members such as bearings are important factors for obtaining excellent friction and wear characteristics in mating materials such as shaft materials and surface properties. Becomes With the development of office automation equipment such as copying machines in recent years, it is indispensable to use an aluminum alloy as a sliding mating material in mechanical devices and equipment that require weight reduction. Also in this, good friction and wear characteristics are required.

The sliding member made of the thermoplastic resin composition disclosed in Japanese Patent Publication No. 63-65232 described above has a high friction coefficient and a large amount of wear when sliding with an aluminum alloy as a mating member. There are problems and it is hard to say that the above requirements are met.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide sliding that exhibits excellent friction and wear characteristics when a soft metal such as an aluminum alloy is used as a mating material. To provide a resin composition for a member and a sliding member.

[0007]

Means for Solving the Problems As a result of intensive studies aimed at achieving the above object, the present inventor has found that a polyamide resin is a main component and a certain proportion of the polyethylene resin, hydrocarbon wax and Mohs hardness 2 It has been found that a sliding member made of a resin composition containing inorganic whiskers (4) to (4) or a resin composition containing these components further mixed with a phenoxy resin can achieve the above object.

The present invention has been completed based on the above findings. According to the present invention, the above objects are 0.5 to 30% by weight of a polyethylene resin, 1 to 15% by weight of a hydrocarbon wax, and a Mohs hardness of 2. It is achieved by a resin composition for a sliding member, which comprises 0.1 to 5% by weight of inorganic whiskers of -4 and the balance polyamide resin.

Further, according to the present invention, the above objects are 0.5 to 30% by weight of a polyethylene resin, 1 to 15% by weight of a hydrocarbon wax, and 0.5.
It is also achieved by a resin composition for a sliding member, which comprises 1 to 5% by weight, a phenoxy resin 3 to 25% by weight, and the balance polyamide resin.

Furthermore, according to the present invention, the above object can be achieved by a sliding member formed by molding these resin compositions for sliding members.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below. First,
The resin composition for sliding members will be described. In the resin composition for a sliding member of the present invention, a polyamide resin is used as a main component, and a polyethylene resin, a hydrocarbon wax and an inorganic whisker having a Mohs hardness of 2 to 4 as a blending component, or a phenoxy resin as a blending component. To use.

The polyamide resin as the main component is an aliphatic polyamide resin, and specifically, nylon 6, nylon 66, nylon 610, nylon 11, nylon 12
And the like, and one or two of these are selected and used.

The polyethylene resin used in the present invention includes low density polyethylene resin, linear low density polyethylene resin, medium density polyethylene resin and high density polyethylene resin. Further, an ultra high molecular weight polyethylene resin or a high molecular weight polyethylene resin composed of an ultra high molecular weight polyethylene component and a low molecular weight polyethylene component can also be used.

Also, ethylene and small amounts of other α-olefins such as propylene, 1-butene, 1-hexene, 1
A copolymer with -octene, 4-methyl-1-pentene and the like can also be used. Furthermore, a polyethylene resin obtained by modifying the ethylene homopolymer or copolymer with an unsaturated carboxylic acid, a derivative thereof, a vinyl polymer, or the like can also be used. This modified polyethylene resin improves the affinity with the polyamide resin.

As the above-mentioned unsaturated carboxylic acid, acrylic acid, methacrylic acid, maleic acid, fumaric acid, tetrahydrophthalic acid, itaconic acid, citraconic acid, crotonic acid, endocis-bicyclo [2,2,1] hept-5 −
Examples thereof include ene-2,3-dicarboxylic acid (nadic acid). Examples of unsaturated carboxylic acid derivatives include maleenyl chloride, maleimide, acrylic acid amide, methacrylic acid amide, glycidyl methacrylate, maleic anhydride, citraconic anhydride, monomethyl maleate, dimethyl maleate, and glycidyl maleate. .
These unsaturated carboxylic acids or their derivatives are used alone or in combination. In particular, unsaturated dicarboxylic acids or acid anhydrides thereof are preferable, and maleic acid, nadic acid or acid anhydrides thereof are more preferable.

Examples of the method for modifying the polyethylene resin with a carboxylic acid or its derivative include a method of graft-polymerizing a graft monomer selected from an unsaturated carboxylic acid or its derivative onto a polyethylene resin. As a method of graft polymerization, a conventionally known method can be adopted. For example, there is a method of melting polyethylene resin and adding a graft monomer to carry out graft polymerization, or a method of dissolving polyethylene resin in a solvent and adding a graft monomer to carry out graft polymerization. At this time, it is preferable to use a radical initiator together. The addition ratio of the graft monomer is preferably 0.01 to 10 parts by weight with respect to 100 parts by weight of the polyethylene resin.

As the vinyl polymer, polystyrene,
Examples thereof include polymethyl methacrylate and acrylonitrile-styrene copolymer.

As a method of modifying the polyethylene resin with a vinyl polymer, a suspension of the polyethylene resin in an aqueous solution is used.
A solution of a vinyl monomer such as styrene, a radical polymerization initiator such as benzoyl peroxide, and an organic peroxide-containing vinyl monomer such as t-butylperoxymethacryloyloxyethyl carbonate is added to the radical polymerization initiator and the organic peroxide. After the oxide-containing vinyl monomer and the vinyl monomer are impregnated in the polyethylene resin, the vinyl monomer and the organic peroxide-containing vinyl monomer are polymerized in the polyethylene resin to produce an organic peroxide group-containing vinyl polymer. Then, the obtained resin composition or a product obtained by adding a polyethylene resin to this resin composition is melt-kneaded to obtain a polyethylene resin grafted with a vinyl polymer. The content ratio of the vinyl polymer in the polyethylene resin modified with the vinyl polymer is preferably 10 to 60% by weight.

Commercially available products of the polyethylene resin grafted with the vinyl-based copolymer as described above include "MODIPER (trade name)" manufactured by NOF Corporation.

The polyethylene resin described above is preferably blended in the form of a polymer alloy with a polyamide resin. This polymer alloy includes polyethylene resin 2
It is composed of 0 to 50% by weight and 80 to 50% by weight of polyamide resin.

Moldability is improved by blending the above-mentioned polyethylene resin with the polyamide resin as the main component. Further, the friction coefficient of the sliding member is lowered, the attacking property with respect to the mating material is alleviated, and the conformability is improved.
The content of the polyethylene resin is usually 0.5 to 30% by weight,
Preferably 5 to 25% by weight, more preferably 10 to 2
It is 0% by weight. If the content of the polyethylene resin is less than 0.5% by weight, the above effects are not exhibited, and if the content of the polyethylene resin exceeds 30% by weight, the abrasion resistance is reduced and the strength as a sliding member is reduced. Lower.

Examples of the hydrocarbon wax used in the present invention include paraffin wax, polyethylene wax, and microcrystalline wax.

These hydrocarbon waxes contribute to the low friction of the sliding member and significantly reduce the damage of the mating member. The content of the hydrocarbon wax is usually 1 to 15% by weight, preferably 3 to 10% by weight, more preferably 5 to 7% by weight. If the blending amount of the hydrocarbon wax is less than 1% by weight, it does not sufficiently contribute to the low friction property, and if the blending amount exceeds 15% by weight, the formability is remarkably lowered and the strength as a sliding member is lowered. Let

Examples of the inorganic whiskers having a Mohs hardness of 2 to 4 used in the present invention include calcium sulfate whiskers, potassium titanate whiskers, zinc oxide whiskers, and magnesium sulfate whiskers. Specifically, calcium sulfate whiskers are used. Is a "Franklin Fiber A-30 (trade name): Mohs hardness 2" manufactured by Dainichi Seika Kogyo Co., Ltd.
3 ", potassium titanate whiskers" Tismo N (trade name): Mohs hardness 4 "manufactured by Otsuka Chemical Co., Ltd. or" Tybreck (trade name): Mohs hardness 4 "manufactured by Kawatetsu Mining Co., Ltd., and zinc oxide whiskers "Panatetra (trade name): Mohs hardness 4" manufactured by Matsushita Amtec Co., Ltd., and "Moss Heidi (trade name): Mohs hardness 2.5" manufactured by Ube Industries, Ltd. can be mentioned as the magnesium sulfate whiskers.

These whiskers are composed of the above polyamide resin,
By being mixed with a composition comprising a polyethylene resin and a hydrocarbon wax, the abrasion resistance of the composition is significantly improved. Fiber length of whiskers is 10-100 μm
In order to achieve uniform dispersion in the composition,
The fiber length is preferably about 50 μm.

The amount of these whiskers blended is 0.
It is 1 to 5% by weight, preferably 1 to 3% by weight. If the blending amount is less than 0.1% by weight, no effect is exerted on the wear resistance of the composition. If the blending amount exceeds 5% by weight, the wear resistance is improved, but the drawback is that the mating material is damaged. appear.

In the present invention, a phenoxy resin can be further compounded in a fixed ratio to the resin composition for sliding members having the above-mentioned component composition. The phenoxy resin used in the present invention is a linear polymer obtained by condensation of bisphenol A and epichlorohydrin, and has the following structural formula.

[0028]

[Chemical 1]

This phenoxy resin improves the wear resistance of the sliding member by being mixed with the above-mentioned polyamide resin, polyethylene resin, hydrocarbon wax and carbonate at a predetermined ratio. And, the blending amount is 3 to 25% by weight, preferably 5 to 20% by weight. If the compounding amount of this phenoxy resin is less than 3% by weight, a sufficient effect cannot be obtained for improving the wear resistance of the sliding member, and if it exceeds 25% by weight, it will slide against the mating material. There is a risk of damaging the surface and the mechanical strength of the sliding member is reduced.

The resin composition for a sliding member of the present invention can be obtained by a known method by mixing predetermined amounts of the above-mentioned components with a mixer such as a Henschel mixer, a super mixer, a ball mill or a tumbler mixer. Also,
The above polymer alloy can be obtained by melt-kneading each component at a predetermined ratio.

Next, the sliding member of the present invention will be described. The sliding member of the present invention is obtained by molding the resin composition for sliding members described above. Molding of the resin composition for sliding members,
It may be either a method of directly molding by an injection molding machine or an extrusion molding machine, or a method of molding pellets obtained from the resin composition for a sliding member by an injection molding machine or an extrusion molding machine.

The sliding member of the present invention is particularly excellent in friction and wear characteristics when a soft metal such as an aluminum alloy is used as a sliding mating material, and it is a plain bearing or a sliding bearing for office / information equipment, electrical equipment, household appliances and the like. It is used as a sliding member that makes sliding contact with bearings and seals.

Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited to the following Examples unless the gist thereof is exceeded. The polyamide resins and polyethylene resins used in Examples and Comparative Examples are shown in Table 1 below.

[0034]

[Table 1] <Polyamide resin> A-1: Nylon 6 [Ube Nylon P1 manufactured by Ube Industries, Ltd.
011F (trade name) ”] A-2: Nylon 66 [Amylan CM300 manufactured by Toray Industries, Inc.
1N (trade name) "] <Polyethylene resin> B-1: Modified polyethylene resin grafted with maleic anhydride [100 parts by weight of high molecular weight polyethylene resin" LUBMER L5000 (trade name) "manufactured by Mitsui Chemicals, Inc., maleic anhydride 1 Parts by weight and 0.1 parts by weight of benzoyl peroxide were mixed, and melt-kneaded with an extruder to obtain. B-2: High-density polyethylene resin [“HIZEX 2100JP (trade name)” manufactured by Mitsui Chemicals, Inc.] B-3: Modified polyethylene resin obtained by grafting polystyrene onto low-density polyethylene resin (low-density polyethylene 70% by weight / polystyrene 30) % By weight) [“MODIPA A1100 (trade name) manufactured by NOF CORPORATION”] <Inorganic whiskers> C-1: calcium sulfate whisker [“Franklin fiber A-30 (trade name) manufactured by Dainichiseika Kogyo KK: Mohs hardness 2”] ~ 3 "] C-2: Potassium titanate whisker [" Tismo N (trade name): Mohs hardness 4 "manufactured by Otsuka Chemical Co., Ltd.] C-3: Magnesium sulfate whisker [" Mosheiji (trade name) manufactured by Ube Industries ") : Mohs hardness 2.5 "] C-4: Zinc oxide whiskers [" Panatetra (trade name) manufactured by Matsushita Amtec Co., Ltd .: Mohs hardness " 4 "] <phenoxy resin>" Phenotote YP-50P (trade name) "manufactured by Tohto Kasei Co., Ltd.

[0035]Example 1 Polyamide resin (A-1) 97.5% by weight, modified polyester
0.5% by weight of ethylene resin (B-1), hydrocarbon-based wack
Paraffin wax 1% by weight and inorganic whistle
1% by weight of calcium sulfate whisker (C-1) as a mosquito
After mixing to make a mixture, melt the mixture in an extruder.
Melt-kneaded, polyamide resin 97.5% by weight, polyethylene
Resin 0.5 wt%, paraffin wax 1 wt% and
Pellets composed of 1% by weight of calcium sulfate whisker
It was made. These pellets are then placed on the injection molding machine.
Put into the top and mold to form an inner diameter of 10 mm and an outer diameter of 14 m.
A cylindrical test piece (sliding member) of m and 10 mm in length was prepared.
It was

[0036]Example 2 80 parts by weight of polyamide resin (A-1) and modified polyester
20 parts by weight of ethylene resin (B-1) was melt-kneaded with an extruder.
80% by weight of polyamide resin, 20 of polyethylene resin
Pellets composed of weight% were prepared (hereinafter referred to as “polymer
Roy A ”. ). Then, a polyamide resin (A-
1) 69.5% by weight, 25 weight of the obtained polymer alloy A
%, Polyethylene wax as hydrocarbon wax
5% by weight and potassium titanate as an inorganic whisker
Make a mixture by mixing 0.5% by weight of whiskers (C-2).
After manufacturing, this mixture is melt-kneaded in an extruder and
Resin 89.5% by weight, polyethylene resin 5% by weight,
5% by weight of polyethylene wax and potassium titanate
Pellets consisting of 0.5% by weight of whiskers were prepared. Next
Then, the inner diameter is 10 mm and the outer diameter is the same as in the first embodiment.
14mm, 10mm long cylindrical test piece (sliding member)
It was made.

[0037]Examples 3-5 Polyamide resin (A-1) 41 to 42% by weight, the above implementation
50% by weight of polymer alloy A used in Example 2, hydrocarbon
Polyethylene wax 7% by weight as a system wax, and
And zinc oxide whiskers (C-4) 1 as inorganic whiskers
After mixing 2% by weight to make a mixture,
The mixture is melt-kneaded with an extruder, and (1) polyamide resin
82% by weight of fat, 10% by weight of polyethylene resin, polyethylene
7% by weight len wax and 1% by weight zinc oxide whisker
Pellet consisting of (2) polyamide resin 81.5 weight
% Polyethylene resin 10% by weight polyethylene polyethylene
From 7% by weight and 1.5% by weight of zinc oxide whiskers
The pellets obtained from (c) polyamide resin 81% by weight
Polyethylene resin 10% by weight, polyethylene wax 7 layers
% And 2% by weight zinc oxide whiskers
Were produced respectively. Then, the same procedure as in Example 1 was performed.
A circle with an inner diameter of 10 mm, an outer diameter of 14 mm, and a length of 10 mm
A cylindrical test piece (sliding member) was produced.

[0038]Example 6 50 parts by weight of polyamide resin (A-1) and modified polyester
50 parts by weight of ethylene resin (B-1) was melt-kneaded with an extruder.
Polyamide resin 50% by weight, polyethylene resin 50
Pellets composed of weight% were prepared (hereinafter referred to as “polymer
Roy B ”. ). Then, a polyamide resin (A-
1) 52 wt%, 40 wt% of the obtained polymer alloy B
%, Microcrystalline wax as hydrocarbon wax
X 7% by weight and magnesium sulphate as whiskers
Whiskers (C-3) 1% by weight are mixed to prepare a mixture.
After that, this mixture is melt-kneaded in an extruder to obtain polyamide
72% by weight resin, 20% by weight polyethylene resin, Mike
7% by weight locrystalline wax and magnesium sulfate
Pellets composed of 1% by weight of muwhisker were prepared. Next
Then, the inner diameter is 10 mm and the outer diameter is the same as in the first embodiment.
14mm, 10mm long cylindrical test piece (sliding member)
It was made.

[0039]Example 7 31% by weight of polyamide resin (A-1), in Example 6
Polymer alloy B used 60% by weight, hydrocarbon type w
Polyethylene wax 7% by weight and inorganic wax
2% by weight of zinc oxide whisker (C-4) was mixed as a whisker.
After mixing to make a mixture, melt the mixture in an extruder
Kneaded, polyamide resin 61% by weight, polyethylene resin
30% by weight, polyethylene wax 7% by weight and oxidation
Pellets consisting of 2% by weight of zinc whiskers were prepared. Next
In the same manner as in Example 1, the inner diameter was 10 mm, and the outer diameter was 10 mm.
Cylindrical test piece with 14 mm diameter and 10 mm length (sliding member)
Was produced.

[0040]Examples 8-9 Polyamide resin (A-2) 81-82% by weight, polyethylene
Ren resin (B-2) 10% by weight, hydrocarbon wax
Polyethylene wax 7% by weight and inorganic whiskers
As calcium sulfate whisker (C-1) 1-2% by weight
After mixing to make each mixture,
Melt kneading the product with an extruder to produce pellets
It was Then, each component composition is obtained by molding in the same manner as in Example 1.
With an inner diameter of 10 mm, an outer diameter of 14 mm, and a length of 10 mm
A cylindrical test piece (sliding member) was produced.

[0041]Examples 10-11 Polyamide resin (A-2) 81-82% by weight, modified poly
Ethylene resin (B-3) 10% by weight, hydrocarbon-based wack
Polyethylene wax 7% by weight and inorganic wax
Magnesium sulfate whiskers (C-3) 1-2 as ska
After mixing each of the weight% to make a mixture,
The mixture is melt-kneaded with an extruder to produce pellets.
Made Then, each component was molded by molding in the same manner as in Example 1.
Inner diameter 10 mm, outer diameter 14 mm, length 10 m consisting of composition
A cylindrical test piece (sliding member) of m was produced.

[0042]Examples 12-14 Polyamide resin (A-1) 21.5 to 36.5% by weight,
50% by weight of polymer alloy A, hydrocarbon wax
Polyethylene wax 7% by weight, as an inorganic whisker
1.5% by weight of zinc oxide whiskers (C-4) and pheno
Mix 5 to 20% by weight of xy resin to make a mixture.
After manufacturing, melt and knead these mixtures with an extruder,
(1) Polyamide resin 76.5% by weight, polyethylene resin
Fat 10% by weight, polyethylene wax 7% by weight, suboxide
1.5% by weight of lead whiskers and 5% by weight of phenoxy resin
(2) 71.5 weight of polyamide resin
%, Polyethylene resin 10% by weight, polyethylene wack
7% by weight, zinc oxide whiskers 1.5% by weight and Fe
Pellets consisting of 10% by weight of nox resin were added to (3) poly
Amide resin 61.5% by weight, polyethylene resin 10% by weight
%, Polyethylene wax 7% by weight, zinc oxide whiskers
Consists of 1.5% by weight and 20% by weight of phenoxy resin
Each pellet was made. Then, as in Example 1 above.
Molded in the same way, consisting of each component composition, inner diameter 10 mm, outer diameter
14mm, 10mm long cylindrical test piece (sliding member)
It was made.

[0043]Comparative Example 1 Polymer alloy A is molded to have an inner diameter of 10 mm and an outer diameter of 1
Create a cylindrical test piece (sliding member) with a length of 4 mm and a length of 10 mm
Made

[0044]Comparative example 2 Polyamide resin (A-1) 95% by weight and hydrocarbon type
Mix 5% by weight of polyethylene wax as wax
After making a mixture, melt-kneading this mixture with an extruder
95% by weight of polyamide resin, polyethylene wax
A pellet consisting of 5% by weight was produced. Then this
Inside the hopper of the injection molding machine
Cylindrical test piece with 10 mm, outer diameter 14 mm, and length 10 mm
(Sliding member) was produced.

Examples 1 to 14 and Comparative Examples 1 to 1 described above
A journal test was performed on the cylindrical test piece prepared in 2 under the test conditions shown in Table 2. The test results are shown in Table 3 ~
5 shows. Regarding the friction coefficient, it shows the friction coefficient at the stage when the test started and became stable, and regarding the wear amount,
The amount of dimensional change of the cylindrical test piece (sliding member) after the test is shown. Also, after the test, evaluate the degree of damage on the surface of the mating material,
Those with no damage are shown with a circle, and those with a damage are shown with x.

[0046]

[Table 2] <Journal test> Sliding speed 20m / min Load 5kgf Counterpart material Aluminum alloy (A5052) Test time 24hr Lubrication Non-lubrication (Below margin)

[0047]

[Table 3] (Below margin)

[0048]

[Table 4] (Below margin)

[0049]

[Table 5]

From the above results, a resin composition of the present invention comprising a polyethylene resin, a hydrocarbon wax, an inorganic whisker and the balance polyamide resin, or a resin composition obtained by further mixing these components with a phenoxy resin was molded. All of the sliding members thus obtained exhibited good friction and wear characteristics. Further, no damage was observed on the surface of the mating material after the test. On the other hand, the sliding member formed by molding the resin composition of Comparative Example 1 has a high coefficient of friction, a large amount of wear, and inferior friction and wear characteristics, and damage (wear) such as scratches on the surface of the mating member. Traces) were not observed and did not achieve the object of the present invention. Further, the sliding member formed by molding the resin composition of Comparative Example 2 showed a low coefficient of friction in sliding with the mating material without damaging the surface of the mating material, but the amount of wear was large. It did not achieve the object of the invention.

[0051]

According to the present invention described above, when a soft metal such as an aluminum alloy is used as a mating material,
Provided are a resin composition for a sliding member and a sliding member that exhibit excellent friction and wear characteristics.

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Claims (7)

[Claims] 1. Polyethylene resin 0.5 to 30% by weight, hydrocarbon wax 1 to 15% by weight, and Mohs hardness 2 to 4
2. A resin composition for a sliding member, characterized by comprising 0.1 to 5% by weight of the inorganic whiskers and the balance polyamide resin. 2. The resin composition for a sliding member according to claim 1, further comprising 3 to 25% by weight of a phenoxy resin. 3. The resin composition for a sliding member according to claim 1, wherein the polyethylene resin is a polymer alloy with a polyamide resin. 4. The polymer alloy of polyethylene resin and polyamide resin is 20 to 50% by weight of polyethylene resin.
And 50 to 50% by weight of polyamide resin.
The resin composition for a sliding member as described in 1. 5. The resin composition for a sliding member according to claim 1, wherein the hydrocarbon wax is selected from paraffin wax, polyethylene wax, and microcrystalline wax. 6. The sliding according to any one of claims 1 to 5, wherein the inorganic whiskers having a Mohs hardness of 2 to 4 are selected from calcium sulfate whiskers, potassium titanate whiskers, zinc oxide whiskers, and magnesium sulfate whiskers. Resin composition for members. 7. A sliding member formed by molding the resin composition for a sliding member according to claim 1. Description: